1. Products
  2. Interface and Isolation
  3. RS-232 / RS-422 / RS-485 / RS-562
  4. RS-485 and RS-422
  5. LTC2850

Data Sheet
JP
User Guides Rev. A
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IBIS Models
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Overview

Features and Benefits

  • 3.3V Supply Voltage
  • 20Mbps Maximum Data Rate
  • No Damage or Latchup Up to ±15kV HBM
  • High Input Impedance Supports 256 Nodes (C, I‑Grade)
  • Operation Up to 125°C (H-Grade)
  • Guaranteed Failsafe Receiver Operation Over the Entire Common Mode Range
  • Current Limited Drivers and Thermal Shutdown
  • Delayed Micropower Shutdown: 5μA Maximum
    (C, I-Grade)
  • Power Up/Down Glitch-Free Driver Outputs
  • Low Operating Current: 370μA Typical in Receive Mode
  • Compatible with TIA/EIA-485-A Specifications
  • Available in 8-Pin and 10-Pin 3mm × 3mm DFN, 8-Pin and 10-Pin MSOP, and 8-Pin and 14-Pin SO Packages

Product Details

The LTC2850, LTC2851 and LTC2852 are low power, 20Mbps RS485/RS422 transceivers operating on 3.3V supplies. The receiver has a one-eighth unit load supporting up to 256 nodes per bus (C, I-grade), and a failsafe feature that guarantees a high output state under conditions of floating or shorted inputs.

The driver maintains a high output impedance over the entire common mode range when disabled or when the supply is removed. Excessive power dissipation caused by bus contention or a fault is prevented by current limiting all outputs and by thermal shutdown.

Enhanced ESD protection allows these parts to withstand up to ±15kV (human body model) on the transceiver interface pins without latchup or damage.

Applications

  • Low Power RS485/RS422 Transceiver
  • Level Translator
  • Backplane Transceiver

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At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (1)

Documentation & Resources

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  • Data Sheets (1)
  • Reliability Data (1)
  • User Guides (1)
  • Product Selector Card (2)
  • Product Selection Guide (1)
  • Videos (1)
  • Press Releases (1)
    • Document Type

    Tools & Simulations

    IBIS Models

    Product Recommendations

    LTC2850 Companion Parts

    Recommended Related Parts

    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    LTC2850CDD#PBF Material Declaration Reliability Data 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2850CDD#TRPBF Material Declaration Reliability Data 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2850CMS8#PBF Material Declaration Reliability Data 8-Lead MSOP
    LTC2850CMS8#TRPBF Material Declaration Reliability Data 8-Lead MSOP
    LTC2850CS8#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LTC2850CS8#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LTC2850HDD#PBF Material Declaration Reliability Data 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2850HDD#TRPBF Material Declaration Reliability Data 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2850HMS8#PBF Material Declaration Reliability Data 8-Lead MSOP
    LTC2850HMS8#TRPBF Material Declaration Reliability Data 8-Lead MSOP
    LTC2850HS8#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LTC2850HS8#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LTC2850IDD#PBF Material Declaration Reliability Data 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2850IDD#TRPBF Material Declaration Reliability Data 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2850IMS8#PBF Material Declaration Reliability Data 8-Lead MSOP
    LTC2850IMS8#TRPBF Material Declaration Reliability Data 8-Lead MSOP
    LTC2850IS8#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LTC2850IS8#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LTC2850MPDD#PBF Material Declaration Reliability Data 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2850MPDD#TRPBF Material Declaration Reliability Data 8-Lead DFN (3mm x 3mm x 0.75mm w/ EP)
    LTC2850MPMS8 Material Declaration Reliability Data 8-Lead MSOP
    LTC2850MPMS8#PBF Material Declaration Reliability Data 8-Lead MSOP
    LTC2850MPMS8#TRPBF Material Declaration Reliability Data 8-Lead MSOP
    LTC2850MPS8#PBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    LTC2850MPS8#TRPBF Material Declaration Reliability Data 8-Lead SOIC (Narrow 0.15 Inch)
    Wafer Fabrication Data R521 Reliability Data

    PCN-PDN Information

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    • LTC2850CMS8#PBF Production
    • LTC2850CMS8#TRPBF Production
    • LTC2850CS8#PBF Production
    • LTC2850CS8#TRPBF Production
    • LTC2850HMS8#PBF Production
    • LTC2850HMS8#TRPBF Production
    • LTC2850HS8#PBF Production
    • LTC2850HS8#TRPBF Production
    • LTC2850IMS8#PBF Production
    • LTC2850IMS8#TRPBF Production
    • LTC2850IS8#PBF Production
    • LTC2850IS8#TRPBF Production
    • LTC2850MPMS8 Last Time Buy
    • LTC2850MPMS8#PBF Production
    • LTC2850MPMS8#TRPBF Production
    • LTC2850MPS8#PBF Production
    • LTC2850MPS8#TRPBF Production

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